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US 12,478,064 B2Granted
Microcapsules and processes for their preparation
AssigneeYissum Research Development Company of the Hebrew University of Jerusalem
InventorsRaed Abu-Reziq, Charlie Batarseh, Ahmad Zarour, Yafit Schnell, Amani Zoabi, Suzana Natour, Suheir Omar, Esti Weiss
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Abstract
The present invention provides microcapsules encapsulating hydrophilic or hydrophobic active agents in an inorganic shell, processes for their preparation and compositions comprising them.
Claims7
A process for the preparation of microcapsules encapsulating at least one active agent in a metal oxide shell comprising the steps of:
- Preparing a non-hydrous emulsion comprising at least one polar phase, at least one non-polar phase, at least one active agent, at least one metal oxide precursor, at least one condensation precursor and at least one surface active agent;
- Subjecting said non-hydrous emulsion to at least one condition allowing the formation of a metal oxide shell encapsulating said at least one active agent;
- thereby forming said microcapsules;
- wherein said non-hydrous emulsion further comprises at least one catalyst.
1 more element
Dependencies are inferred from the claim text.